The secretion of antibodies occurs during which step of the acquired immune response?

• A. Response
• B. Dissemination
• C. Processing
• D. Recognition

Answer: (A)

During the acquired immune response, antibody secretion happens in the effector phase of the humoral response. Once a B cell recognizes its specific antigen and receives help from a T helper cell, it proliferates and differentiates into plasma cells. These plasma cells are specialized to produce and release large amounts of antibodies into the blood and other body fluids, which is the main action of the response step. Recognition is the initial antigen detection, and processing involves preparing antigen for presentation; these occur earlier. Dissemination isn’t a defined step for this process, so the antibody secretion aligns with the response phase.